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authorXin Long <lucien.xin@gmail.com>2017-12-08 21:04:00 +0800
committerDavid S. Miller <davem@davemloft.net>2017-12-11 11:23:04 -0500
commitad05a7a05ede28ba6dd935d9e932264a22518b1f (patch)
tree9a60d1b471879cce652cd1eeae0f0735913aa039 /include/linux/sctp.h
parent96b120b3c1397c90b64d1f4b2300fb7ce4aa8a68 (diff)
sctp: add basic structures and make chunk function for idata
sctp_idatahdr and sctp_idata_chunk are used to define and parse I-DATA chunk format, and sctp_make_idata is a function to build the chunk. The I-DATA Chunk Format is defined in section 2.1 of RFC8260. Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/sctp.h')
-rw-r--r--include/linux/sctp.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index 6d2bd64b6ffe..38e2cf66195f 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -243,6 +243,23 @@ struct sctp_data_chunk {
struct sctp_datahdr data_hdr;
};
+struct sctp_idatahdr {
+ __be32 tsn;
+ __be16 stream;
+ __be16 reserved;
+ __be32 mid;
+ union {
+ __u32 ppid;
+ __be32 fsn;
+ };
+ __u8 payload[0];
+};
+
+struct sctp_idata_chunk {
+ struct sctp_chunkhdr chunk_hdr;
+ struct sctp_idatahdr data_hdr;
+};
+
/* DATA Chuck Specific Flags */
enum {
SCTP_DATA_MIDDLE_FRAG = 0x00,